About this Ontario poll from Mainstreet Research
This Ontario poll was fielded by Mainstreet Research in February 2025, with a middle field date of February 20, 2025. The poll collected data from a total sample of n=1,245 Ontario respondents via IVR technology (automated calls).
The margin of error for an online sample is not applicable.
For comparison purposes, a random sample of this size would yield a margin of error [moe] of ±2.8%, 19 times out of 20 (for entire sample only) around the 50%-mark.
The regional breakdown of this poll was not made publicly available.
If we compare these national numbers with the previous poll from Mainstreet Research (February 2025), the Ontario PC Party climbs two points from 40% to 42% (variation similar to moe), the Ontario Liberal Party climbs two points from 29% to 31% (variation similar to moe), and the Ontario NDP loses two points from 19% to 17% (variation similar to moe).
You can read more information on this poll here.